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Affirmer understands and acknowledges that Creative Commons is not a 112 | party to this document and has no duty or obligation with respect to this 113 | CC0 or use of the Work. 114 | 115 | For more information, please see 116 | 117 | 118 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | ![PHP MISTAKES](http://i.memecaptain.com/gend_images/H1oGGQ.gif) 2 | ###Biggest PHP developers mistakes 3 | 4 | 5 | ####- http://php.com/ 6 | *no explanation* 7 | ####- Turn OFF all error reporting 8 | ```php 9 | error_reporting(0); 10 | ``` 11 | *thats why errors or warnings appears randomly later!* 12 | ####- Use @ intentionally to silence errors or exceptions 13 | ```php 14 | $result = @$my_lib->process($data); 15 | ``` 16 | *a secure library will validate the external data and return false or an Exception if something fail so we can handle that* properly 17 | ```php 18 | try { 19 | $result = $my_lib->process($data); 20 | } catch (Exception $e) { 21 | //handler the error 22 | } 23 | ``` 24 | *Read more about [Error Control Operators](http://php.net/manual/en/language.operators.errorcontrol.php)* 25 | 26 | 27 | ####- Not use [isset()](http://php.net/manual/en/function.isset.php) or [array_key_exists](http://php.net/manual/en/function.array-key-exists.php) 28 | ```php 29 | if ($_POST['email']) { 30 | $email = $_POST['email']; 31 | } 32 | ``` 33 | *sure an E_NOTICE-level error message will be issued if email key is not found* 34 | ####- [Wrong Comparison Operators](http://php.net/manual/en/language.operators.comparison.php "http://php.net/manual/en/language.operators.comparison.php") 35 | ```php 36 | if ($a = value) { /* really what you want?*/ } 37 | //Equal 38 | if (1 == true) { /*true*/ } 39 | //Identical 40 | if( 1 === true) { /*false*/ } 41 | ``` 42 | In fact you should always use Identical operator `===` for comparing and save you the pain later. 43 | -- More info in the link 44 | ####- Security: [SQL injection](http://en.wikipedia.org/wiki/SQL_injection "http://en.wikipedia.org/wiki/SQL_injection") or [XSS attacks](http://en.wikipedia.org/wiki/Cross-site_scripting "http://en.wikipedia.org/wiki/Cross-site_scripting") and others 45 | *you must use statments and properly encode all external data* 46 | 47 | ####- Not read php-fig [(Basic Coding Standard & Coding Style Guide )](http://www.php-fig.org/) 48 | *nowadays we work for others people too, we share code and contribute with others developers, so this is a must guide* 49 | ####- Learn [PHP Frameworks](https://github.com/ziadoz/awesome-php#frameworks) like [Symfony](http://symfony.com/) before learn PHP 50 | *If you don't dominate OOP, ORM, interfaces, abstract classes, annotations and other basics in PHP you can not expect to really understand what are you winning with this Framework* 51 | ###Contribute 52 | #####Miss some others common mistake ? Make Edit and make a [Pull Request](https://github.com/juliomatcom/php-mistakes/compare "Pull request") 53 | 54 | --------------------------------------------------------------------------------